Heel-seat fitting machine



June 22, 1937. s. HAZELTON HEEL SEAT FITTING MACHINE Filed April 10, 1956 Patented June 22, 1 937 UNITED STATES PATENT OFFICE HEEL-SEAT FITTING MACHINE Application April 10, 1936, Serial No. 73,781. In

Great Britain May 9, 1935 8 Claims. '(Cl. 12-315) This invention relates to the manufacture of shoes and is illustrated as embodied in a heel-seat fitting machine.

It is an object of this invention to provide a heel-seat fitting machine in which shoes may be quickly and effectively positioned and clamped preparatory to trimming the heel-seat portions of the soles of the shoes. In theillustrated heelseat fitting machine, the overlasted counter por-- tion of the shoe, after being positioned lengthwise and widthwise, is forced by a jack against rand crease entering plates of the machine with a constant amount of pressure. During the application of pressure against the crease plates the heel 15 seat portion of the sole of the shoe which is supported upon the crease plates, is moved to a predetermined position with relation to the paths of movement of the trimming knives of the machine regardless of the size and style of the shoe, the

height of the last or the amount of pressure exerted by the operator against a treadle through which the jack is raised.

The invention will be better understood and appreciated from reading the following detailed 5 description thereof in connection with the accompanying drawing, in which Fig. 1 is a side View, partly in section, of a fragment of aheel-seat fitting machine showing particularly a jack on which is mounted a shoe posi- 3o tioned to be operated upon by the trimming instrumentalities of the machine;

Fig. 2 is a plan view, partly in section, showing a portion of the jack as viewed along the line 11-11 of Fig. 1.

The illustrated machine comprises a jack l 0 for a shoe l2 mounted upon a last l4, and a pair of 1 fiat crease plates 1 6 which engage within the rand crease of the shoe and against which the shoe is securely clamped by the jack after it has been positioned in the machine. A substantial portion of the illustrated machine is identical to the machine disclosed in United States Letters Patent 'N0 l' 1,850,149 which may be referred to for a complete understanding of the construction and operation'o-f the machine. I

The jack Ill comprises a slide [8 which is movable lengthwise of crease plates l6 along a guideway 20 of a projecting bracket 22 of the machine through the provision of a knob 24. The crease plates l6 comprise thin portions which are constructed and arrangedto enter the rand crease of the shoe without substantially distorting the heelseat portion o'f the sole of the-shoe. When the shoe upon the jack is forced with considerable :pressure against the thin portions of the crease plates l 5 the same are likely to beunduly flexed unless some provision such as will later be described, is made for limiting upward movement of the jack upon which the shoe is mounted. Formed at the rear end of the slide i8 is a vertical dovetail guideway 26 shaped to receive a dovetail projection 28 of a jack post carrier 30. Downward movement of the carrier 30 along the guideway 26 is limited by the engagement of a flange 32 of the carrier with a shoulder 34 of the slide l8, and an upward movement of the carrier 30 along the guideway 26 is limited by the engagement of the flange 32 with an adjustable stop 36 which is in threaded engagement with a plate 38 secured by screws 49 to the slide 18. The jack post carrier 30 is normally forced into its lowered position against the shoulder 34 of the slide l8 by a strong spring 39 which surrounds the stop 36 and the respective ends of which are in engagement with the plate 38 and the flange 32 of the carrier 30. V

A jack post 42, which is mounted for sliding movement in a bore 44 of the carrier 36, is provided with a last pin 46. An arm 48 formed integral with the last pin 46 is pivotally connected through a bolt 50 to a rearwardly extending flange 52 of the jack post 42 in order to permit right and left shoes which are positioned widthwise in the machine by the crease plates l6, to swing to their proper widthwise positions as depending portions 54 of the crease plates are moved against the sides of the shoe. A pair of rock plates 56 are pivotally mounted at opposite sides respectively of the flange 52, the rock plates being shaped to be engaged by the cones 58 of lasts of various shapes. Before the shoe is located widthwise as above described it is positioned lengthwise by the engagement of its rear end with a back gage 60 and is also forced with a slight amount of pressure against the under sides of the crease plates l6 through mechanism which will later be described.

The jack post 42 has a cylindrical recess 62 extending throughout the greater portion of its length for receiving a spring 64, the lower end of which engages in a pocket 66 formed in the upper end of a plunger 68 slidingly mounted in a recess 10 formed in the lower portion of the carrier 30. While moving the slide [8 rearwardly along the guideway 20 to cause the shoe to engage the back gage 60 the operator depresses .the shoe upon the jack post 42 against the action of the spring 64, insuring at the same time that the crease plates l6 engage within the rand crease of the shoe. When the shoe is released by the operator it is moved under action of the spring 64 with a slight pressure against the under sides of the crease plates Hi. In order to insure that the jack post 42 shall not rotate in the bore 44 of the carrier 30 a screw 12 is threaded into the carrier 30 with its reduced inner end 14 (Fig. 2) arranged in a vertical slot 16 (Fig. 1) of the jack post 42.

After the shoe l2 has been positioned lengthwise and has been moved by the spring 64 into engagement with the crease plates [6 it is positionecl Widthwise by swinging the crease plates toward each other until their depending portions are pressed firmly against opposite sides of the counter portion of the shoe, the overlasted counter portion of the shoe then being forced with considerable pressure against the under sides of the crease plates 16. Treadle-operated mechanism (not shown) which is substantially the same as that disclosed in United States Letters Patent No. 1,840,030, granted January 5, 1932, on an application filed in the names of Joseph Gouldbourn, Fred Ricks and William R. Barclay, moves the crease plates I6 toward each other to centralize the shoe and then raises the forward end of a lifting lever i3 against the action of a spring 19. The lever 18 is pivoted at 38 to the machine frame and engages within a slot 82 formed in the lower end of the jack post carrier 30.

Preparatory to forcing the shoe with clamping pressure against the crease plates lEit is desirable to lock the jack post 42 to the carrier 36 through suitable mechanism which will now be described. A link 84 which engages within a slot 86 formed in the plunger 68 is pivotally connected to a wrist pin 88 secured to the plunger and at its upper end is pivotally connected by a pin 90 to a pair of arms 92 which engage within channels 94 (Fig. 2) formed at the ends of a rock shaft 96 journaled in the carrier 30 and which are secured to the rock shaft by screws 98. The rock shaft 96 is suitably recessed at its central portion to embrace the jack post 42 and when moved in a clockwise direction (Fig. 1) operates as a lock or binder to se cure the jack post to the carrier 30. Movement of the rock shaft 96 in a counterclockwise direction (Fig. 1) to its inoperative or non-locking position is limited by a set screw Hi0 threaded in a hole in the carrier 30. It will be noted that the plunger 68 which through the spring 64 supports the jack post 42, has its downward movement limited by the link 84. Downward movement of the link 84 is limited by the arms 92 which, when the end of the lever 18 is lowered, swing in a counterclockwise direction until the rock shaft 96 engages the set screw I00.

In presenting the shoe to the machine for the performance of the heel-seat fitting operation, the operator simultaneously moves the slide I8 rearwardly along the guideway 20 and depresses the shoe supported by the jack post 42 against the action of the spring 64 in order to insure that the crease plates [6 of the machine shall be engaged within the rand crease of the shoe.

When the rear end of the shoe has been moved into engagement with the back gage 60 downward pressure against the shoe is relieved thereuntil their depending portions 54 engage the the treadle-operated mechanism the arrangement being such that the clamp is moved into engagement with the central part of the heelseat portion of the sole just prior to the engagement of the depending portions 54 of the crease plates 16 with the sides of the shoe. As the treadle-operated mechanism continues to operate, the lever 18 is swung in a counterclockwise direction about the bearing 85, thereby raising the plunger 68 and thus causing the rock shaft 96 to rotate in a. clockwise direction to lock the jack post 42 to the carrier 36. Continued upward movement of the plunger 68 under the action of the lever 18 causes the carrier 30 and the jack post 42 to be raised as a unit until the flange 32 of the carrier engages the stop 36, and then causes the slide l8 to be jammed in its guideway 20, thereby insuring that the slide is not moved forwardly under the action of heelseat reducing or back knives H0.

After the shoe has been positioned and clamped in the machine, the operator trips a one-revolution clutch to operate the back knives H0 which move forwardly of the shoe to reduce the heel-seat portion I66 of the short outsole and to operate a pair of knives H2 which move transversely of the sole and form heel-breast receiving shoulders upon the same.

Although the invention has been illustrated with reference to a heel-seat fitting machine, it will be understood that the jack may be used in various types of machines in which the heel end of the shoe must be accurately positioned and effectively clamped preparatory to operating upon the shoe.

Having described the invention what I claim as new and desire to secure by Letters Patent of the United States is:

1. A machine for operating upon shoes having, in combination, an abutment constructed and arranged to be engaged by a shoe, a jack post for supporting the shoe, a carrier for the jack post, means yieldable under pressure for moving the shoe mounted upon the post'into engagement with said abutment, mechanism for locking together the carrier and the jack post, a stop, and mechanism for moving the carrier and the jack post as a unit a predetermined distance limited by the stop in order to clamp the shoe securely against said abutment.

2. A machine for operating upon shoes having, in combination, a slide mounted for movement in a fixed path, an abutment constructed and arranged to be engaged by a shoe, a carrier movable with the, slide and mounted for movement toward and away from said abutment in the slide, a jack post which is mounted in the carrier and is yieldingly movable away from the abutment under pressure and is constructed and arranged to force a shoe against said abutment when pressure against the shoe is relieved, means for locking the jack post and the carrier together, a stop, and means for positively moving the jack postand the carrier as a unit a fixed distance determined by the stop to cause the shoe to be forced with. considerable pressure against said abutment.

3. A heel-seat fitting machine having, in combination, one or more crease plates, a carrier, a jack post. mounted in the carrier, resilient mechanism yieldable under pressure exerted against a shoe upon the jack post and constructed and arranged to force the shoe against the crease plates when pressure exerted against the shoe is relieved, means for locking the jack. post and the carrier together, an adjustable stop, and means for moving the carrier and the jack post which is locked to the carrier a predetermined distance in accordance with the position of the stop whereby to force the shoe with considerable pressure against the crease plates and to flex said plates to a limited extent.

4. A heel-seat fitting machine having, in combination, crease plates, a carrier, a jack post s'lidingly mounted in the carrier, resilient means for moving a shoe mounted upon the jack post against the crease plates, means for locking the jack post to the carrier, means for moving the carrier and the jack post locked thereto as a unit in a path extending heightwise of a shoe mounted upon the jack post whereby to force the shoe with clamping pressure against the crease plates, and a stop for limiting the movement of the carrier and the jack post in said path thereby insuring that the crease plates are not deformed excessively under the clamping pressure of the shoe.

5. A heel-seat fitting machine having, in combination, crease plates, a slide movable lengthwise of the plates, a carrier mounted for movement toward and away from the crease plates in the slide, a jack post yieldingly mounted in the carrier and constructed and arranged to force a shoe mounted on the jack post into engagement with the crease plates, a back gage for positioning the shoe with relation to the plates, means for locking the jack post to the carrier after the shoe has been forced into engagement with the crease plates, a stop, and means for moving the carrier and the jack post as a unit a predetermined distance into engagement with the stop whereby to force the shoe with clamping pressure against the crease plates.

6. A machine for operating upon shoeshaving, in combination, an abutment constructed and arranged to be engaged by a shoe, a carrier, a jack post and a plunger mounted for movement in the carrier, a spring interposed between the jack post and the plunger and constructed and arranged to force a shoe upon the jack post against said abutment with initial pressure, mechanism operated by said plunger and constructed and arranged to lock the jack post to the carrier, means for guiding the carrier in a path extending heightwise of the shoe, a stop for limiting movement of the carrier in said path, and. means for operating the plunger to cause the carrier and the jack post to be locked together and then to move the shoe upon the jack post a predetermined distance in said path whereby to force the shoe with final clamping pressure against the abutment.

'7. A machine for operating upon shoes having, in combination, crease plates constructed and arranged to be engaged by a shoe, a carrier, a jack post and a plunger mounted for movement in the carrier, a spring interposed between the jack post and the plunger and constructed and arranged to force a shoe supported by the jack post against the crease plates with initial pressure, a rotatable binder mounted in the carrier, mechanism for operatively connecting the plunger to the binder for causing the binder to lock the jack post to the carrier, means for guiding the carrier and the jack post as a unit in a path extending toward and away from the crease plates, a stop for limiting movement of the carrier toward the crease plates, and means for operating the plunger to cause the carrier and the jack post to be locked together and then to move the shoe upon the jack post a predetermined distance in said path whereby to force the shoe with final clamping pressure against the crease plates.

8. A machine for operating upon shoes having, in combination, crease plates constructed and arranged to be engaged by a shoe upon a last, a jack post, said jack post comprising a tiltable member for engaging spaced portions of the cone of the last and a last pin which is mounted for swinging movement about an axis disposed at right angles to the general plane of the crease plates, a carrier for the jack post, means yieldable under pressure for moving the shoe upon the jack post into engagement with the crease plates, mechanism for locking the jack post to the carrier, a stop, and mechanism for moving the carrier and the jack post as a unit a predetermined distance limited by said stop whereby to clamp the shoe securely against said crease plates.

GEORGE HAZELTON. 

